William Crowther (programmer)

In the 1990s, Cisco Systems bought the part of BBN where Crowther was working. He continued to work for Cisco until his retirement in 1997 to live in Delanson, New York with his second wife Nancy.

In the spring of 1976, he was contacted by Stanford researcher Don Woods, seeking his permission to enhance the game. Crowther agreed, and Woods developed several enhanced versions on a PDP-10 housed in the Stanford Artificial Intelligence Laboratory (SAIL) where he worked. Over the following decade the game gained in popularity, being ported to many operating systems, including personal-computer platform CP/M.

Crowther worked at Xerox PARC from 1976 to 1983. During this period he met and married Nancy Sanders Burnes in 1980 in Palo Alto, California. The two of them did a lot of rock climbing with friends in Yosemite and elsewhere. In 1983 he left Xerox and went back to Bolt Beranek and Newman in Cambridge, Massachusetts. He became active with the Appalachian Mountain Club and every year helped teach rock climbing to beginners. He continued doing that each spring until 2013.

In Colossal Cave, or more simply called Adventure, the player moves around an imaginary cave system by entering simple, two-word commands and reading text describing the result. Crowther used his extensive knowledge of cave exploration as a basis for the gameplay, and there are many similarities between the locations in the game and those in Mammoth Cave, particularly its Bedquilt section. In 1975, Crowther released the game on the early ARPAnet system, of which BBN was a prime contractor.

The location of the game in Colossal Cave was not a coincidence. Crowther and his first wife Pat were active and dedicated cavers in the 1960s and early 1970s—both were part of many expeditions to connect the Mammoth and Flint Ridge cave systems. Pat played a key role in the September 9, 1972 expedition that finally made the connection. Indeed, even during his time working at BBN, his colleagues noticed that Crowther spent a fair amount of time doing chin-ups in doorframes, which apparently helped him concentrate.

During the early 1970s, Crowther worked at defense contractor and internet pioneer Bolt Beranek and Newman (BBN), where he was part of the original small ARPAnet development team. His implementation of a distributed distance vector routing system for the ARPAnet was an important step in the evolution of the internet.

Crowther met and married Pat Crowther while studying at the Massachusetts Institute of Technology, where he received a B.S. in physics in 1958.

As a member of the MIT Outing Club during the late 1950s and early 1960s, Crowther also played an important role in the development of rock climbing in the Shawangunks in New York State. He began climbing there in the 1950s and continues to climb. He made the first ascent of several classic routes including Arrow, Hawk, Moonlight, and Senté. Some of these routes sparked controversy because protection bolts were placed on rappel, a new tactic that Crowther and several others began to use at the time. The community reaction to this technique was an important part of the evolution of climbing ethics in the Shawangunks and beyond.

William Crowther (born 1936) is an American computer programmer, caver, and rock climber. He is the co-creator of Colossal Cave Adventure from 1975 onward, a seminal computer game that influenced the first decade of video game design and inspired the text adventure game genre.